The metric (REF ) violates the weak energy condition [1]}, [2]} at the region \(r<r_C=\frac{Q\dot{Q}}{\dot{M}}\)  (The overdot means the partial derivative with respect to time \(v\)  -\(\dot{M}=\frac{\partial M}{\partial v}\) .). However, particles can't across this boundary due to the Lorentz force [3]}. We restrict the consideration by assumption that \(r>r_C\) . If we put \(M(v)\equiv M=const.\)  and \(Q(v)\equiv Q=const.\)  then the metric (REF ) becomes Reissner-Nordstrom in advanced Eddington-Finkelstein coordinates. If we consider neutral particles then there are no particles with negative energy outside the event horizon \(r=r_h=M+\sqrt{M^2-Q^2}\) . The same statement is valid in the metric (REF ) [4]}. The situation changes when one considers the non-geodesic motion of the charged particles [5]}, [6]}.
